I just did the emission testing for Arizona one week ago today. AZ does their testing on most new vehicles thru the OBD II port, so I'm not sure what you will face. However, I have mine tuned with the flashpaq to 91-93 octane tune, my motor is stock, no cold air intake and have a dynomax cat back rock crawler exhaust. Do not do what I did!!!!! Before heading over to the emissions test facility (it's less than two miles from my house) I checked for any thrown codes and I did have a small emissions leak according to the flashpaq. I knew it was my gas cap, because it had thrown that code before, so I drove to the facility thinking I will outsmart them. Well just before pulling into the test site, I cleared all DTC's then proceeded in like a champ. What I also did by clearing any codes was also erase the entire normal drive cycle history stored on the ECU, which is what OBD II emissions testing uses to judge if you have issues. I received a huge FAILURE and was sent on my merry lifted jeep way. They were kind enough to tell what happened and how to fix it. So I immediately went to the dealer, bought a gas cap, drove my jeep for about four days of city and highway mixed driving (why four days? google search normal drive cycle for any car/truck to see if you can manage to accomplish it by the book. It's crazy) Anyhow, I passed on the next attempt, and never returned to stock tune, but I do regular maintenance and run injector cleaner every so often. As for your flashpaq issue, try updating it on the internet thru a USB port. Good luck and keep us posted on your results.